反应详情

Dissolve dl-13-ethyl-3-methoxy-6-methyl-17α-ethynyl-17-hydroxygona-2,5(10)-diene (3.5 g) in methanol (90 ml) containing concentrated hydrochloric acid (6.0 ml) and water (4.0 ml). Stir the solution under nitrogen for one hour. Work up in the usual fashion. Chromatograph on Florex (150 g), then recrystallize from ether-hexane to obtain dl-13-ethyl-17α-ethynyl-17-hydroxy-6α-methylgon-4-en-3-one (0.60 g) m.p. 148°-151°; ultraviolet absorption peak at 240 mμ (ε15,300), infrared maxima (chloroform) at 2.55 μ, 3.05 μ, 6.01 μ.

1. customChromatograph on Florex (150 g), then recrystallize from ether-hexane